Date: Thu, 08 May 2008 10:16:12 +0200 From: Jille <jille@quis.cx> To: CZUCZY Gergely <gergely.czuczy@harmless.hu> Cc: freebsd-pf@freebsd.org Subject: Re: iptables rule in pf Message-ID: <4822B6CC.1080502@quis.cx> In-Reply-To: <20080508101252.4d25b9eb@twoflower.in.publishing.hu> References: <48222786.3050400@samoylyk.sumy.ua> <20080508085234.2cac29ca@twoflower.in.publishing.hu> <4822B459.6090307@samoylyk.sumy.ua> <20080508101252.4d25b9eb@twoflower.in.publishing.hu>
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CZUCZY Gergely schreef: > On Thu, 08 May 2008 11:05:45 +0300 > Oleksandr Samoylyk <oleksandr@samoylyk.sumy.ua> wrote: > > >> CZUCZY Gergely wrote: >> >>> On Thu, 08 May 2008 01:04:54 +0300 >>> Oleksandr Samoylyk <oleksandr@samoylyk.sumy.ua> wrote: >>> >>> >>>> Dear Community, >>>> >>>> I want to move some of our firewalls from Linux/iptables to FreeBSD/pf. >>>> >>>> After reading man pf.conf for a couple of minutes I couldn't find the >>>> realization of such iptables rule in pf: >>>> >>>> iptables -t nat -A PREROUTING -i ethX -d ! my.smtp.server -p tcp --dport >>>> 25 -j DROP >>>> >>> block in on $interface proto tcp from any to ! my.smtp.server port 25 >>> >>> >>>> iptables -t nat -A PREROUTING -i ethX -p tcp --dport 2525 -j DNAT >>>> --to-destination :25 >>>> >>> rdr on $interface proto tcp from any to port 2525 -> >>> <the_destionation_you_have_omitted> port 25 >>> >> I meant _any_ destination with 25 port. >> >> That iptables rule worked for any destination. >> > You cannot rewrite a packet's destination address to _any_ destination. > > It's like you cannot submit a package at the post office with the destination > address "any". It's just meaningless. > I think he only want to 'change' the port-number, and don't touch the destination address. You could try: rdr on $interface proto tcp from any to port 2525 -> port 25 But that's a wild guess (I'm *not* sure) -- Jille > >>>> How it can be rewriting in pf.conf? >>>> >>> be sure to read the openbsd faq: >>> http://www.openbsd.org/faq/pf >>> >>> pf works quite differently then iptables, it has a different logic. you will >>> get used to it. just forget these "tables" which you've got used to with >>> iptables. >>> >>> > > >
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